Gas burner



Oct. 21 1924.

N. C. DAVISON GAS BURNER Fild Afir'il 19.19255 v INVENTOR I Patented Oct. 21, 1924.-

UNITED STATES PATENT OFFICE.

NEVILLE C. IDAVISON, OF'EDGEWORTH, PENNSYLVANIA,

GAS BURNER.

Application filed April 19, 1923. Serial No.- 633,142.

To all whom it may concern:

Be it known that I, NEVILLE O. DAVISON, a citizen of the United States, residing at Edgeworth, in the county of Allegheny and gaseous fuel with a proper supply of air for admission to a furnace or other combustion chamber. More specifically, the invention has in view to provide means for maintaming the flame of combustion lndependent of any tendency to blow out or terminate the combustion, due to any irregularitiesin rate of flow, cross drafts, or the like.

Ordinarily, in burners for the combustion of fluid fuel, especially in industrial uses, the gas and air mixture is introduced into the furnace under varying pressure, dependent upon the supply, rate of combustion, degree of heat desired, etc.

In my present invention, I provide a burner in which the main combustible mixture is delivered centrally through an opening with a series of laterally'arranged ports leading into a protected zone, beyond the range of the effects of draft, etc., wherein there will always be maintained a pilot light, arranged to maintain the combustion of the main stream of fuel.

, In the drawings, showing one preferred embodiment of the invention,

Fig. 1 is a longitudinal vertical section through the burner, constructed in accordance with my invention;

Fig. 2 is a view in elevation at the delivery end of the burner;

Fig. 3 is a cross sectional view on the line III-III of Fig. 1; and

Fig. 4 is a view showing the burner in position in a furnace setting.

Referring to the drawings, 2 is the main casing of the burner, of cylindrical cross section, having a laterally arranged air inlet opening 3, preferably provided with a controlling damper or valve 4: for regulation of the incoming air supply, under pressure. The other end of the burner casing is preferably enlargpd in diameter, as at 5, providing a. mixing 0 amber 6, beyond which is a cross partition or diaphragm 7 set inwardly of the end of the enlarged portion 5, leaving a short annularly enclosed delivery extension 19. p

The partition 7 is substantially flat at its middle portion and provided with a central opening 8 for outward passage of the gas and air. mixture. The partition 7 is curved backwardly at its peripheral juncture with this wall of the main casing, as shown in Fig. 1, providing an inner rounded merger with the inner annular wall of the chamber 6, as indicated at 9.

The outer face of partition 7 is in reverse relation to the inner cylindrical wall of portion 5 of the burner, and form's'an acute annular recess 10, receding backwardly from the front face of the partition, as shown. A

series of comparatively. small ports or openings 11 are arranged. through the partition,

- annularly around the central opening 8, and

at an angle leading outwardly .from the longitudinal center, for the purpose hereinafter described.

Gas is supplied to the inner central portion of the burner by pipe 12, threaded through a receiving hub 13, as shown, sov as to mount the pipe centrally of the mixing chamber, and in alinement with the opening 8 in the partition 7, as well as centrally of the burner chamber as a whole. Gas pipe 12 is preferably provided with a controlling valve 14 of well known construction.

The inner end of the pipe is closed by a cap or end wall 15 and the wall of the pipe backwardly of its end is perforated with an annularly arranged series of openings or ports 16.

In operation, gas under pressure is admitted through pipe 12 and passes outwardly through the several reduced ports 16 to the interior of casing 2 and mixlng chamber 6.

. A suflicient supply of air under pressure to combine with the gas is admitted through the branch opening 3, controlled, ifdesired,

by damper l, and the proportions of the gas and air'are within the judgment and control of the operator, as will be readily, under stood.

An advantage in the series of laterally disposed reduced openings 16 is that the gas will pass outwardly through them, laterally of the pipe 12, filling the casing 2, and will thus assist in thorough commmgling withthe incoming air, so that the mixture in chamber 6 will be substantially complete and even." The main body of the mixture will pass outwardly through opening 8, and into the furnace chamber 17 within walls 18 of whatever heating structure is utilized with the burner. Ordinarily, combustion of the gaseous mixture will take place in connection with any suitable bridge wall or surfaces of refractory material, not neces-' sarily herein further described, and combustion will continue as long as the supply of fuel is maintained.

As shown in Fig. 4, the delivery end of the burner casing may be spaced away from the furnace door opening, more or less adapting it to easy location with relation to various furnace constructions. Because of certainty of maintaining the combustion, the burner in this manner is very available for different installations, independent of wall or other protection from drafts.

Certain portions of the mixture passing outwardly from chamber 6 through ports 11, into the short extended chamber 19 beyond the partition 7, will accumulate and be always maintained in the annular groove 10, around the main supply column'passing into the furnace. Such supplemental or lateral pocket-contained fuel is in a zone of comparative quiet, and not only out of range of any drafts tending to blow out the flame, but is also protected and will be maintained in continuous combustion by reason of the extended coping of the enlarged shell of the burner.

' This condition is partly because of the comparatively small restricted ports 11,

which tend to choke down the flow of the mixture, as compared to the main current passing inwardly through the opening 8.

The result of such maintenance of fuel through the ports 11 in such restricted and protected area is that it will constantly maintain a re-lighting or pilot light combustion flame, whereby to immediately continue the combustion of the main supply in the. event of any blowing out of the flame.

The construction and operation of .the invention will be readily understood from the foregoing description. It is comparatively simple, composed of few parts, not liable to get out of order, and will efliciently maintain a constant supply of fuel and combustion at all times. It maybe made and installed in single units or in variously arranged series of them, dependent upon local conditions or requirements, and may, of course, be made in suitable dimensions and capacity to meet the requirements of use,

The device may be variously changed in detail construction by the skilled mechanic,

but all such changes are to be considered as within the scope of the following claims.

What I claim is:

1. In burner construction, a main mixing shell provided with an incoming air supply and a gas supply and having a terminal outlet opening, means for defiectin a portion of the gaseous mixture to one slde thereof, and a communicating outermost recess formed in the shell for maintaining protected pilot light combustion.

2. A gas burner consisting of a main shell having a central gas supply pipe and an air inlet opening, and a transverse partition having a central outlet opening and a series of reduced openings arranged laterally thereof, and an outer annular receiving groove therefor.

3. A gas burner consisting of a main shell having a central gas supply pipe provided with laterally arranged ports, an air inlet opening for the shell, a transverse partition across the shell beyond the gas supply pipe forming an annular corner recess and having a main central opening, and a series of laterally arranged ports leading to said annular recess.

4. A gas burner consisting of a main shell having a central gas supply pipe provided with laterally arranged ports, an air inlet opening for the shell, a transverse partition across the shell beyond the gas supply pipe and inwardly of the end of the shell, said partition having a main central opening and a series of laterally arranged ports leading to said recess.

5. The combination with a central gas supply pipe, of an air mixing shell surrounding the gas pipe having a rear lateral air inlet opening and a forwardly extending casing provided with a cross partition joined with the shell by a rearwardly ex tending peripheral joint portion forming an outer annular groove, said partition having a main central outlet opening and a series of reduced ports opening through the partition into the annular groove.

' 6. The combination with a central gas supply pipe, of an air mixing shell surrounding the gas pipe having a rear lateral air inlet opening and a forwardly extending casing provided with a cross partition joined with the shell by a rearwardly extending peripheral joint portion forming an annular groove, saidpartition having a main signature.

NEVILLE C. DAVISON. 

